PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-02:28:10
G08     259.9          15.5                9.5 +/-    1.70      23.3 +/-    1.70  0.160 / 0.490
G10     72.5           55.4                8.5 +/-    0.56      10.1 +/-    0.56  0.090 / 0.430
G11     306.3          21.4                6.9 +/-    3.11      14.7 +/-    3.11  0.170 / 0.420
G14     280.7          68.5                8.5 +/-    0.70       9.1 +/-    0.70  0.170 / 0.410
G18     308.3          37.1                6.8 +/-    3.36      10.4 +/-    3.36  0.040 / 0.060
G20     73.2           63.8               11.5 +/-    1.24      12.7 +/-    1.24  0.040 / 0.060
G21     155.9          10.5               11.2 +/-    2.57      31.0 +/-    2.57  0.120 / 0.260
G27     227.4          11.8                9.5 +/-   14.71      25.5 +/-   14.71  0.080 / 0.310
G31     175.2          38.8               11.7 +/-    1.03      17.3 +/-    1.03  0.150 / 0.350
G32     2.7            69.6                8.3 +/-    0.70       8.8 +/-    0.70  0.160 / 0.330