PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/14-04:58:00
G01     47.2           22.8                3.3 +/-    2.65       6.8 +/-    2.65  0.040 / 0.050
G06     176.6          26.1                6.3 +/-    2.44      11.9 +/-    2.44  0.040 / 0.060
G07     146.3          11.7                6.3 +/-    1.26      17.0 +/-    1.26  0.080 / 0.200
G11     45.2           18.2                4.8 +/-    3.05      10.9 +/-    3.05  0.140 / 0.320
G13     247.3          30.5                5.4 +/-    1.82       9.3 +/-    1.82  0.230 / 0.350
G15     279.1          16.1                4.2 +/-    1.59      10.1 +/-    1.59  0.170 / 0.370
G17     326.0          78.7                6.7 +/-    0.53       6.8 +/-    0.53  0.040 / 0.050
G19     249.2          63.5                7.6 +/-    0.55       8.4 +/-    0.55  0.040 / 0.070
G28     41.2           57.7                6.7 +/-    1.73       7.7 +/-    1.73  0.040 / 0.030
G30     151.7          44.3                9.8 +/-    0.62      13.4 +/-    0.62  0.040 / 0.040