PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-03:42:50
G08     313.3          16.7                7.7 +/-    1.38      18.3 +/-    1.38  0.060 / 0.050
G10     329.7          59.8                7.3 +/-    0.30       8.2 +/-    0.30  0.050 / 0.020
G14     216.3          28.2               14.4 +/-    1.67      26.2 +/-    1.67  0.020 / 0.010
G15     46.5           11.6                6.1 +/-    2.88      16.4 +/-    2.88  0.040 / 0.010
G20     32.3           61.4                7.8 +/-    0.56       8.7 +/-    0.56  0.050 / 0.050
G21     131.5          59.8               10.2 +/-    0.42      11.6 +/-    0.42  0.040 / 0.040
G24     77.1           30.1                9.5 +/-    1.33      16.6 +/-    1.33  0.140 / 0.270
G27     279.5          37.7               10.0 +/-    1.56      15.1 +/-    1.56  0.180 / 0.210
G32     220.6          47.4               11.7 +/-    1.76      15.3 +/-    1.76  0.130 / 0.090