PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-15:27:50
G01     111.8          22.9               12.0 +/-    1.40      24.7 +/-    1.40  0.140 / 0.110
G07     98.5           61.9               12.2 +/-    0.94      13.6 +/-    0.94  0.140 / 0.170
G08     42.6           24.8               10.3 +/-    1.94      20.3 +/-    1.94  0.030 / 0.020
G09     175.1          17.2               10.5 +/-    2.15      24.9 +/-    2.15  0.030 / 0.020
G11     95.6           42.3               12.6 +/-    0.63      17.7 +/-    0.63  0.030 / 0.030
G13     313.0          25.5                9.6 +/-    1.48      18.4 +/-    1.48  0.030 / 0.030
G17     204.3          31.9               10.9 +/-    1.38      18.4 +/-    1.38  0.100 / 0.110
G18     85.5           23.4               11.4 +/-    1.01      23.2 +/-    1.01  0.110 / 0.140
G28     308.3          60.0                9.5 +/-    1.08      10.8 +/-    1.08  0.130 / 0.210
G30     4.4            74.9               12.4 +/-    0.62      12.8 +/-    0.62  0.190 / 0.240