PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/22-23:57:40
G01     82.5           32.8                9.3 +/-    1.18      15.4 +/-    1.18  0.060 / 0.080
G07     130.9          35.8                9.4 +/-    1.17      14.7 +/-    1.17  0.060 / 0.060
G11     60.3           36.0                8.6 +/-    0.73      13.4 +/-    0.73  0.090 / 0.070
G13     286.6          38.1               11.1 +/-    1.48      16.6 +/-    1.48  0.070 / 0.090
G15     310.6          12.6                7.2 +/-    1.73      18.9 +/-    1.73  0.040 / 0.040
G17     218.9          62.1                9.2 +/-    2.05      10.2 +/-    2.05  0.040 / 0.040
G18     54.4           20.2                6.5 +/-    2.32      14.3 +/-    2.32  0.130 / 0.110
G19     217.2          32.2                9.5 +/-    2.42      15.9 +/-    2.42  0.180 / 0.080
G28     353.9          61.6                8.1 +/-    0.67       9.0 +/-    0.67  0.100 / 0.210
G30     120.9          71.3               10.2 +/-    0.51      10.7 +/-    0.51  0.070 / 0.190