PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-03:28:00
G01     78.5           31.9                3.6 +/-    1.20       6.1 +/-    1.20  0.030 / 0.030
G07     131.2          39.6                7.5 +/-    0.57      11.0 +/-    0.57  0.030 / 0.030
G11     63.8           40.5                5.4 +/-    0.97       7.8 +/-    0.97  0.100 / 0.190
G13     284.3          39.0                2.2 +/-    4.17       3.2 +/-    4.17  0.090 / 0.240
G15     307.1          14.8                0.9 +/-    2.85       2.2 +/-    2.85  0.040 / 0.040
G17     219.1          61.9                8.3 +/-    1.23       9.3 +/-    1.23  0.040 / 0.060
G19     217.1          36.3                6.7 +/-    1.12      10.4 +/-    1.12  0.050 / 0.070
G28     343.6          61.4                4.8 +/-    0.46       5.4 +/-    0.46  0.050 / 0.080
G30     120.9          74.9                7.1 +/-    0.58       7.4 +/-    0.58  0.050 / 0.050