PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-19:57:50
G01     71.2           33.0               14.7 +/-    0.57      24.2 +/-    0.57  0.100 / 0.390
G07     137.3          31.8               19.6 +/-    1.26      33.1 +/-    1.26  0.100 / 0.330
G11     54.6           31.8               13.4 +/-    0.76      22.6 +/-    0.76  0.040 / 0.050
G13     275.1          37.5               19.4 +/-    1.12      29.5 +/-    1.12  0.040 / 0.040
G15     303.2          15.0               11.4 +/-    2.47      28.2 +/-    2.47  0.060 / 0.100
G17     231.7          65.1               21.2 +/-    0.79      23.1 +/-    0.79  0.060 / 0.070
G18     49.6           18.6               11.6 +/-    1.34      26.3 +/-    1.34  0.060 / 0.120
G19     224.0          40.4               20.8 +/-    1.35      30.0 +/-    1.35  0.050 / 0.140
G28     19.5           59.3               16.3 +/-    0.37      18.6 +/-    0.37  0.040 / 0.110
G30     135.1          61.0               19.0 +/-    0.66      21.4 +/-    0.66  0.040 / 0.110