PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-17:58:10
G07     308.2          48.9                9.8 +/-    2.00      12.5 +/-    2.00  0.100 / 0.080
G08     129.3          38.5               12.6 +/-    1.46      18.8 +/-    1.46  0.100 / 0.060
G09     311.9          74.7               10.7 +/-    0.60      11.0 +/-    0.60  0.070 / 0.060
G16     41.9           31.7                8.3 +/-    1.74      14.0 +/-    1.74  0.080 / 0.050
G23     141.1          68.0               11.2 +/-    0.77      12.0 +/-    0.77  0.040 / 0.030
G27     86.2           37.5               10.0 +/-    0.82      15.1 +/-    0.82  0.050 / 0.030
G30     283.7          20.9               10.6 +/-    1.26      22.9 +/-    1.26  0.210 / 0.310