PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-14:42:50
G01     111.7          22.9                9.7 +/-    1.70      20.0 +/-    1.70  0.150 / 0.210
G07     98.5           61.8               11.4 +/-    0.93      12.8 +/-    0.93  0.080 / 0.250
G08     42.5           24.3                7.8 +/-    2.20      15.6 +/-    2.20  0.020 / 0.020
G09     174.9          16.9               10.1 +/-    1.13      24.0 +/-    1.13  0.030 / 0.020
G11     95.3           42.2               10.5 +/-    0.57      14.8 +/-    0.57  0.030 / 0.030
G13     313.0          25.6                8.9 +/-    1.55      17.1 +/-    1.55  0.030 / 0.030
G17     204.2          32.4               11.1 +/-    2.26      18.5 +/-    2.26  0.090 / 0.150
G18     85.4           23.3                8.3 +/-    1.18      16.9 +/-    1.18  0.090 / 0.150
G28     308.1          59.9                9.7 +/-    0.99      11.0 +/-    0.99  0.080 / 0.160
G30     3.3            74.8               11.2 +/-    0.40      11.5 +/-    0.40  0.110 / 0.150