PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-16:57:40
G01     47.1           23.1                6.8 +/-    1.63      13.9 +/-    1.63  0.040 / 0.060
G06     176.9          27.3               11.1 +/-    1.81      20.6 +/-    1.81  0.040 / 0.050
G11     43.9           12.6                6.1 +/-    1.97      16.0 +/-    1.97  0.140 / 0.280
G13     246.3          29.4               10.2 +/-    1.73      18.2 +/-    1.73  0.130 / 0.240
G15     280.3          15.2                8.5 +/-    1.99      21.1 +/-    1.99  0.080 / 0.200
G17     319.4          77.9                9.1 +/-    0.36       9.2 +/-    0.36  0.060 / 0.250
G19     251.7          63.4                9.2 +/-    0.69      10.2 +/-    0.69  0.020 / 0.020
G28     49.2           55.3                8.7 +/-    0.78      10.3 +/-    0.78  0.030 / 0.030
G30     150.3          35.9                9.7 +/-    0.79      15.1 +/-    0.79  0.040 / 0.050