PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-12:13:10
G02     200.9          17.6                4.3 +/-    2.64      10.0 +/-    2.64  0.120 / 0.150
G06     169.1          53.5                6.4 +/-    0.57       7.7 +/-    0.57  0.090 / 0.130
G13     226.5          14.0                5.5 +/-    1.83      14.0 +/-    1.83  0.030 / 0.030
G17     17.2           62.3                4.9 +/-    0.91       5.4 +/-    0.91  0.040 / 0.030
G19     325.7          71.7                5.0 +/-    1.02       5.2 +/-    1.02  0.040 / 0.030
G24     310.9          27.8                2.8 +/-    1.19       5.2 +/-    1.19  0.030 / 0.020
G28     81.3           46.0                4.0 +/-    0.54       5.4 +/-    0.54  0.150 / 0.230
G30     157.5          16.6                4.4 +/-    1.52      10.4 +/-    1.52  0.220 / 0.300