PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-04:28:00
G01     320.3          14.2              -22.6 +/-   10.76     -57.3 +/-   10.76  0.090 / 0.250
G08     261.1          15.3                9.7 +/-    1.70      24.0 +/-    1.70  0.140 / 0.370
G10     72.7           55.4                5.1 +/-    0.83       6.1 +/-    0.83  0.040 / 0.060
G11     306.6          21.1                5.6 +/-    4.37      12.0 +/-    4.37  0.050 / 0.060
G14     278.9          67.7                4.4 +/-    0.66       4.7 +/-    0.66  0.030 / 0.030
G18     308.4          36.9                4.3 +/-    1.49       6.7 +/-    1.49  0.030 / 0.040
G20     92.2           48.8                8.7 +/-    0.69      11.2 +/-    0.69  0.090 / 0.320
G27     227.2          11.6                9.0 +/-    2.49      24.4 +/-    2.49  0.090 / 0.300
G31     175.1          39.1                7.9 +/-    1.16      11.7 +/-    1.16  0.170 / 0.440
G32     3.1            69.5                4.8 +/-    0.39       5.0 +/-    0.39  0.160 / 0.320