PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-16:43:00
G07     343.8          61.6                8.3 +/-    0.43       9.3 +/-    0.43  0.080 / 0.090
G08     98.9           51.4                9.2 +/-    0.91      11.4 +/-    0.91  0.070 / 0.090
G09     196.0          75.2                8.4 +/-    0.93       8.7 +/-    0.93  0.040 / 0.040
G11     144.9          13.9                9.9 +/-    1.10      25.3 +/-    1.10  0.040 / 0.030
G16     46.5           10.1                7.0 +/-    4.56      19.4 +/-    4.56  0.220 / 0.320
G23     155.3          42.0               10.0 +/-    1.33      14.2 +/-    1.33  0.170 / 0.370
G27     56.9           33.0                7.4 +/-    1.37      12.2 +/-    1.37  0.210 / 0.760
G28     235.6          24.9               11.8 +/-    2.01      23.1 +/-    2.01  0.160 / 0.760
G30     302.7          36.6                8.3 +/-    1.63      12.9 +/-    1.63  0.080 / 0.080