PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-17:12:40
G01     43.7           19.8                9.3 +/-    1.02      20.5 +/-    1.02  0.110 / 0.330
G06     176.0          32.3               13.2 +/-    1.01      22.1 +/-    1.01  0.130 / 0.300
G13     241.6          26.3               14.0 +/-    1.48      26.5 +/-    1.48  0.040 / 0.060
G15     275.6          14.0               10.6 +/-    1.27      27.0 +/-    1.27  0.050 / 0.080
G17     340.4          75.6               12.4 +/-    0.44      12.8 +/-    0.44  0.080 / 0.160
G19     262.5          66.9               11.2 +/-    0.73      12.0 +/-    0.73  0.090 / 0.170
G24     317.9          14.3                9.3 +/-    2.15      23.6 +/-    2.15  0.020 / 0.040
G28     57.0           53.4               10.7 +/-    1.21      12.9 +/-    1.21  0.030 / 0.040
G30     152.1          30.9               12.6 +/-    0.70      21.7 +/-    0.70  0.070 / 0.040