PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-18:27:40
G01     85.8           32.2               11.5 +/-    0.84      19.2 +/-    0.84  0.050 / 0.050
G07     128.8          36.4               13.0 +/-    0.75      20.1 +/-    0.75  0.040 / 0.040
G11     63.8           38.2               11.1 +/-    1.03      16.7 +/-    1.03  0.050 / 0.060
G13     290.1          37.8               13.4 +/-    1.81      20.3 +/-    1.81  0.050 / 0.070
G15     312.4          11.8                8.1 +/-    1.83      21.7 +/-    1.83  0.070 / 0.080
G17     216.0          56.6               12.3 +/-    0.86      14.4 +/-    0.86  0.070 / 0.080
G18     58.8           22.3                9.6 +/-    2.10      20.1 +/-    2.10  0.070 / 0.140
G19     215.4          30.6               12.9 +/-    2.75      22.3 +/-    2.75  0.090 / 0.170
G28     344.8          61.6               10.5 +/-    0.62      11.8 +/-    0.62  0.050 / 0.120
G30     116.6          71.2               12.9 +/-    0.88      13.6 +/-    0.88  0.050 / 0.090