PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-12:12:30
G02     201.3          20.9                4.0 +/-    1.80       8.5 +/-    1.80  0.040 / 0.090
G06     167.4          57.1                7.8 +/-    0.89       9.1 +/-    0.89  0.040 / 0.100
G13     224.1          11.8                2.7 +/-    2.60       7.2 +/-    2.60  0.080 / 0.110
G17     21.4           59.7                4.7 +/-    0.26       5.4 +/-    0.26  0.080 / 0.120
G19     336.4          70.6                4.7 +/-    0.61       5.0 +/-    0.61  0.040 / 0.040
G24     308.8          30.1                3.3 +/-    2.89       5.7 +/-    2.89  0.040 / 0.040
G28     85.4           44.2                5.5 +/-    0.66       7.5 +/-    0.66  0.090 / 0.460
G30     157.8          13.6                4.0 +/-    1.18      10.3 +/-    1.18  0.100 / 0.420