PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-21:27:40
G01     218.5          11.4               10.9 +/-    2.30      29.5 +/-    2.30  0.030 / 0.050
G03     269.5          69.9                7.6 +/-    0.55       8.0 +/-    0.55  0.050 / 0.050
G09     299.9          16.9                7.5 +/-    1.48      17.9 +/-    1.48  0.110 / 0.220
G14     90.6           23.3                8.4 +/-    0.90      17.1 +/-    0.90  0.110 / 0.270
G16     135.9          51.8               11.6 +/-    0.68      14.3 +/-    0.68  0.060 / 0.060
G22     206.3          64.2                9.1 +/-    0.91      10.0 +/-    0.91  0.060 / 0.060
G23     312.5          42.2              -11.7 +/-    1.45     -16.4 +/-    1.45  0.160 / 0.340
G26     84.2           54.3                7.1 +/-    0.41       8.5 +/-    0.41  0.140 / 0.270
G31     48.3           26.5                6.4 +/-    2.53      12.1 +/-    2.53  0.030 / 0.040