PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-07:43:00
G08     263.8          15.5                7.5 +/-    1.42      18.4 +/-    1.42  0.040 / 0.070
G10     71.5           55.9                4.9 +/-    1.07       5.8 +/-    1.07  0.040 / 0.060
G11     307.9          20.0                5.3 +/-    2.00      11.7 +/-    2.00  0.170 / 0.510
G14     274.1          65.8                3.8 +/-    0.72       4.1 +/-    0.72  0.180 / 0.440
G18     309.1          35.9                3.6 +/-    1.30       5.7 +/-    1.30  0.150 / 0.320
G20     104.3          23.5                4.0 +/-    0.52       8.2 +/-    0.52  0.150 / 0.310
G21     155.6          10.3                5.1 +/-    1.44      14.0 +/-    1.44  0.110 / 0.430
G27     227.3          11.9                4.0 +/-    3.09      10.6 +/-    3.09  0.110 / 0.340
G31     175.3          38.5                7.1 +/-    1.22      10.6 +/-    1.22  0.030 / 0.030
G32     1.6            69.9                5.3 +/-    0.82       5.6 +/-    0.82  0.030 / 0.030