PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/26-16:57:50
G01     42.2           18.1                6.7 +/-    3.32      15.4 +/-    3.32  0.070 / 0.060
G06     175.3          35.1               10.0 +/-    1.70      15.9 +/-    1.70  0.050 / 0.070
G13     239.3          24.7                8.8 +/-    2.72      17.2 +/-    2.72  0.260 / 0.390
G15     273.4          13.3                7.2 +/-    1.30      18.6 +/-    1.30  0.150 / 0.260
G17     347.5          74.1                9.2 +/-    0.45       9.5 +/-    0.45  0.030 / 0.030
G19     268.9          68.4                7.9 +/-    0.84       8.5 +/-    0.84  0.030 / 0.040
G24     317.4          16.3                7.1 +/-    2.08      17.2 +/-    2.08  0.180 / 0.260
G28     60.7           52.4                8.5 +/-    1.03      10.5 +/-    1.03  0.120 / 0.350
G30     153.0          28.7               10.6 +/-    1.15      19.0 +/-    1.15  0.040 / 0.040