PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-14:42:50
G01     102.4          27.8               10.0 +/-    1.48      18.3 +/-    1.48  0.030 / 0.020
G07     113.4          54.8               11.0 +/-    0.68      13.2 +/-    0.68  0.030 / 0.020
G08     41.7           16.1                8.6 +/-    2.25      20.8 +/-    2.25  0.030 / 0.040
G11     82.0           42.4               10.8 +/-    1.10      15.1 +/-    1.10  0.030 / 0.040
G13     305.7          31.4                8.5 +/-    1.20      14.5 +/-    1.20  0.070 / 0.140
G17     207.9          42.2               12.5 +/-    0.85      17.6 +/-    0.85  0.100 / 0.150
G18     75.1           24.6                9.7 +/-    1.41      19.1 +/-    1.41  0.060 / 0.130
G19     210.8          14.6                9.9 +/-   11.42      24.7 +/-   11.42  0.060 / 0.110
G28     326.9          61.6                8.8 +/-    0.66       9.9 +/-    0.66  0.080 / 0.100
G30     43.3           79.8               11.0 +/-    0.40      11.2 +/-    0.40  0.070 / 0.090