PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-21:58:10
G03     232.7          66.7                7.3 +/-    0.87       7.9 +/-    0.87  0.050 / 0.060
G09     307.1          25.7                6.5 +/-    1.61      12.6 +/-    1.61  0.050 / 0.060
G14     100.7          15.7                9.4 +/-    1.69      23.0 +/-    1.69  0.050 / 0.060
G16     115.3          60.5               10.9 +/-    0.88      12.3 +/-    0.88  0.050 / 0.060
G22     195.1          52.0                9.6 +/-    1.56      11.9 +/-    1.56  0.120 / 0.400
G23     321.7          51.6                8.3 +/-    1.19      10.3 +/-    1.19  0.110 / 0.380
G26     64.5           49.7                6.1 +/-    0.41       7.7 +/-    0.41  0.030 / 0.030
G31     54.2           17.1                4.9 +/-    0.62      11.6 +/-    0.62  0.040 / 0.030