PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-16:27:40
G01     49.0           24.5                8.5 +/-    0.79      16.8 +/-    0.79  0.040 / 0.060
G06     177.3          25.0               13.4 +/-    1.62      26.1 +/-    1.62  0.050 / 0.060
G11     44.3           14.8                7.8 +/-    1.54      19.4 +/-    1.54  0.190 / 0.400
G13     248.8          30.8               12.5 +/-    2.58      21.5 +/-    2.58  0.160 / 0.370
G15     282.7          15.6               10.9 +/-    1.62      26.7 +/-    1.62  0.080 / 0.120
G17     305.1          78.4               11.5 +/-    0.82      11.8 +/-    0.82  0.090 / 0.130
G19     247.2          61.5               12.9 +/-    0.45      14.4 +/-    0.45  0.030 / 0.030
G28     45.0           56.2               11.1 +/-    0.81      13.1 +/-    0.81  0.030 / 0.030
G30     149.4          38.7               12.0 +/-    1.03      17.8 +/-    1.03  0.040 / 0.050