PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-19:27:50
G01     266.0          40.6                8.4 +/-    1.05      12.1 +/-    1.05  0.070 / 0.110
G03     316.4          32.7                7.7 +/-    2.91      12.7 +/-    2.91  0.070 / 0.100
G10     131.5          13.4               11.1 +/-    2.07      28.5 +/-    2.07  0.110 / 0.410
G11     245.9          18.0                9.5 +/-    2.23      22.0 +/-    2.23  0.130 / 0.440
G14     47.9           47.5                6.7 +/-    0.59       8.7 +/-    0.59  0.040 / 0.080
G18     226.3          35.7               10.3 +/-    1.03      16.2 +/-    1.03  0.040 / 0.090
G22     313.3          54.9                6.9 +/-    0.63       8.2 +/-    0.63  0.120 / 0.340
G25     45.4           12.5                5.9 +/-    0.83      15.5 +/-    0.83  0.150 / 0.330
G31     53.4           76.0                7.4 +/-    0.95       7.6 +/-    0.95  0.050 / 0.070
G32     66.1           31.6                7.1 +/-    0.57      12.1 +/-    0.57  0.040 / 0.070