PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-22:27:50
G03     230.4          66.3                9.9 +/-    0.82      10.7 +/-    0.82  0.100 / 0.280
G07     250.5          11.3               -1.6 +/-   19.05      -4.3 +/-   19.05  0.100 / 0.230
G09     306.0          22.6                9.9 +/-    1.69      20.5 +/-    1.69  0.030 / 0.030
G14     102.5          11.6               10.6 +/-    2.15      28.5 +/-    2.15  0.040 / 0.040
G16     122.2          60.8               11.3 +/-    0.42      12.7 +/-    0.42  0.130 / 0.330
G22     193.9          52.1               11.1 +/-    0.66      13.6 +/-    0.66  0.130 / 0.370
G23     320.1          49.9                9.2 +/-    0.65      11.7 +/-    0.65  0.040 / 0.050
G26     67.1           51.9                8.0 +/-    1.11       9.8 +/-    1.11  0.050 / 0.050
G31     52.9           20.5                5.6 +/-    3.36      12.3 +/-    3.36  0.050 / 0.050