PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-15:27:50
G01     89.9           31.2               10.9 +/-    1.16      18.6 +/-    1.16  0.050 / 0.060
G07     125.6          41.3               11.1 +/-    0.39      15.9 +/-    0.39  0.040 / 0.050
G11     68.4           40.4               10.9 +/-    0.89      15.7 +/-    0.89  0.070 / 0.080
G13     294.4          36.9               10.2 +/-    2.84      15.7 +/-    2.84  0.060 / 0.080
G17     213.3          51.0               13.0 +/-    1.14      16.2 +/-    1.14  0.040 / 0.060
G18     63.1           23.5                9.9 +/-    0.93      20.1 +/-    0.93  0.040 / 0.050
G19     213.5          27.6               11.6 +/-    1.75      21.4 +/-    1.75  0.080 / 0.090
G28     335.6          61.4               10.6 +/-    0.72      11.9 +/-    0.72  0.070 / 0.080
G30     107.3          74.1               12.1 +/-    0.76      12.6 +/-    0.76  0.040 / 0.060