PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-23:43:10
G10     255.2          31.7               11.9 +/-    1.20      20.1 +/-    1.20  0.040 / 0.050
G13     48.8           25.8                8.1 +/-    1.71      15.6 +/-    1.71  0.040 / 0.040
G15     75.7           55.7               10.2 +/-    0.93      12.1 +/-    0.93  0.170 / 0.200
G16     291.4          15.1                6.7 +/-    2.72      16.6 +/-    2.72  0.110 / 0.180
G20     277.0          53.6               11.1 +/-    3.16      13.4 +/-    3.16  0.040 / 0.040
G21     340.2          63.2                9.8 +/-    0.61      10.8 +/-    0.61  0.030 / 0.040
G26     263.9          13.4                9.0 +/-    2.59      23.3 +/-    2.59  0.100 / 0.100
G29     164.5          43.7               12.2 +/-    0.71      16.7 +/-    0.71  0.110 / 0.100