PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-17:57:50
G01     317.1          23.7               19.1 +/-    2.97      38.5 +/-    2.97  0.130 / 0.360
G08     253.4          11.6                7.6 +/-    1.89      20.4 +/-    1.89  0.190 / 0.330
G10     86.5           48.9                9.1 +/-    0.72      11.6 +/-    0.72  0.130 / 0.170
G11     303.1          21.5                7.9 +/-    2.11      16.7 +/-    2.11  0.110 / 0.180
G14     296.2          69.4                8.1 +/-    0.89       8.5 +/-    0.89  0.040 / 0.060
G20     109.8          23.1                9.2 +/-    2.15      18.8 +/-    2.15  0.040 / 0.040
G22     302.9          12.1                6.0 +/-    3.60      16.0 +/-    3.60  0.170 / 0.490
G31     175.4          45.4               11.0 +/-    1.00      14.8 +/-    1.00  0.180 / 0.520
G32     17.7           63.7                7.4 +/-    0.72       8.1 +/-    0.72  0.050 / 0.070