PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-03:57:40
G01     77.9           32.0               19.5 +/-    1.21      32.7 +/-    1.21  0.030 / 0.030
G07     131.6          38.9                8.4 +/-    0.68      12.4 +/-    0.68  0.030 / 0.020
G11     62.9           40.0                6.3 +/-    1.03       9.2 +/-    1.03  0.090 / 0.250
G13     283.5          39.1                1.7 +/-    3.49       2.5 +/-    3.49  0.090 / 0.220
G15     306.7          14.8                1.3 +/-    2.43       3.3 +/-    2.43  0.080 / 0.090
G17     219.8          62.4               10.9 +/-    1.22      12.2 +/-    1.22  0.070 / 0.140
G19     217.4          36.8                9.5 +/-    1.11      14.5 +/-    1.11  0.050 / 0.050
G28     345.1          61.4                5.9 +/-    0.44       6.6 +/-    0.44  0.050 / 0.060
G30     122.5          74.2                8.3 +/-    0.53       8.6 +/-    0.53  0.050 / 0.080