PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-03:12:40
G08     319.3625       12.3362          8.0628 +/-  2.8880   21.3622 +/-  2.8880  0.120 / 0.120
G10     304.2506       53.5431          6.4247 +/-  0.5924    7.7756 +/-  0.5924  0.130 / 0.120
G14     211.6043       18.4832         11.6131 +/-  1.5021   26.5204 +/-  1.5021  0.080 / 0.100
G15     45.8207        26.4890          4.2014 +/-  2.3252    7.9371 +/-  2.3252  0.100 / 0.140
G18     5.5203         65.3243          7.2747 +/-  0.8120    7.9214 +/-  0.8120  0.050 / 0.040
G20     75.7646        13.1665          4.8036 +/-  1.0557   12.4837 +/-  1.0557  0.040 / 0.030
G21     110.4403       70.6955          7.6753 +/-  0.8621    8.0824 +/-  0.8621  0.110 / 0.310
G24     93.1283        28.3749          7.5514 +/-  1.3772   13.6873 +/-  1.3772  0.340 / 0.440
G27     292.4362       36.9124         10.7108 +/-  1.9068   16.4187 +/-  1.9068  0.060 / 0.060
G32     213.4181       36.8639          8.7998 +/-  2.0767   13.5010 +/-  2.0767  0.090 / 0.070