PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-23:42:50
G01     109.2          24.0               11.4 +/-    1.04      22.7 +/-    1.04  0.050 / 0.060
G07     105.9          56.2               10.6 +/-    0.82      12.5 +/-    0.82  0.050 / 0.060
G08     41.7           20.3                7.4 +/-    2.79      16.1 +/-    2.79  0.090 / 0.130
G09     175.2          16.0               10.0 +/-    3.98      24.4 +/-    3.98  0.090 / 0.140
G11     89.9           42.6               10.8 +/-    0.99      15.0 +/-    0.99  0.030 / 0.040
G13     311.1          27.7                7.0 +/-    1.64      12.8 +/-    1.64  0.030 / 0.040
G17     203.7          37.6               11.0 +/-    0.87      16.6 +/-    0.87  0.190 / 0.280
G18     78.8           22.9                9.4 +/-    0.77      19.2 +/-    0.77  0.210 / 0.360
G28     306.9          59.1                8.8 +/-    1.31      10.1 +/-    1.31  0.080 / 0.130
G30     11.7           76.7                9.8 +/-    1.14      10.0 +/-    1.14  0.080 / 0.130