PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-03:58:00
G01     314.2          27.6                3.7 +/-    2.63       6.8 +/-    2.63  0.080 / 0.130
G10     94.8           45.3                6.8 +/-    1.03       9.1 +/-    1.03  0.070 / 0.100
G11     293.2          26.1                8.8 +/-    1.70      16.7 +/-    1.70  0.040 / 0.040
G14     327.3          70.7                5.7 +/-    0.80       6.0 +/-    0.80  0.040 / 0.230
G18     292.0          47.5                6.6 +/-    9.46       8.6 +/-    9.46  0.190 / 0.210
G20     113.7          21.9                6.6 +/-    1.66      14.0 +/-    1.66  0.140 / 0.160
G22     306.0          17.7                6.7 +/-    4.12      15.7 +/-    4.12  0.090 / 0.070
G25     93.0           12.6                5.4 +/-    2.22      14.2 +/-    2.22  0.070 / 0.080
G31     170.6          54.6                7.2 +/-    0.74       8.6 +/-    0.74  0.030 / 0.030
G32     22.2           60.9                5.0 +/-    0.70       5.6 +/-    0.70  0.040 / 0.030