PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-18:57:50
G01     68.2           32.6               11.5 +/-    1.08      19.1 +/-    1.08  0.120 / 0.220
G07     138.7          29.4               17.1 +/-    1.09      30.3 +/-    1.09  0.080 / 0.240
G11     52.6           29.7               11.7 +/-    1.65      20.6 +/-    1.65  0.050 / 0.110
G13     271.7          37.2               15.4 +/-    2.64      23.5 +/-    2.64  0.070 / 0.090
G15     301.3          15.3                9.7 +/-    1.06      24.1 +/-    1.06  0.040 / 0.040
G17     236.4          68.2               16.2 +/-    0.47      17.3 +/-    0.47  0.030 / 0.040
G18     47.5           17.3               10.8 +/-    1.85      25.3 +/-    1.85  0.050 / 0.060
G19     225.9          42.3               16.9 +/-    1.62      23.7 +/-    1.62  0.080 / 0.090
G28     23.8           58.7               10.9 +/-    1.18      12.5 +/-    1.18  0.190 / 0.170
G30     137.7          59.1               15.3 +/-    0.40      17.5 +/-    0.40  0.180 / 0.210