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               12.7 +/-    1.13      26.0 +/-    1.13  0.030 / 0.050
G07     98.5           61.9               11.6 +/-    0.72      12.9 +/-    0.72  0.030 / 0.050
G08     42.6           24.8                9.2 +/-    1.57      18.0 +/-    1.57  0.040 / 0.040
G09     175.1          17.2               12.0 +/-    2.15      28.4 +/-    2.15  0.030 / 0.030
G11     95.6           42.3               11.9 +/-    0.38      16.7 +/-    0.38  0.100 / 0.220
G13     313.0          25.5               10.8 +/-    2.72      20.7 +/-    2.72  0.110 / 0.180
G17     204.3          31.9               11.2 +/-    0.88      18.8 +/-    0.88  0.050 / 0.070
G18     85.5           23.4               10.1 +/-    1.26      20.5 +/-    1.26  0.040 / 0.070
G28     308.3          60.0               10.2 +/-    0.68      11.5 +/-    0.68  0.050 / 0.130
G30     4.4            74.9               12.5 +/-    0.72      12.9 +/-    0.72  0.070 / 0.090