PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-11:57:40
G01     83.3           32.1                3.6 +/-    0.88       6.0 +/-    0.88  0.040 / 0.040
G07     129.5          38.7                4.7 +/-    0.51       7.0 +/-    0.51  0.030 / 0.040
G11     63.6           38.9                3.5 +/-    1.95       5.1 +/-    1.95  0.050 / 0.070
G13     288.0          38.3                0.7 +/-    0.70       1.1 +/-    0.70  0.040 / 0.060
G15     312.4          11.5                1.6 +/-    2.60       4.2 +/-    2.60  0.110 / 0.190
G17     217.4          54.1                5.0 +/-    1.24       6.0 +/-    1.24  0.140 / 0.180
G18     58.3           22.5                3.2 +/-    2.33       6.5 +/-    2.33  0.210 / 0.310
G19     215.8          33.0                4.4 +/-    1.27       7.2 +/-    1.27  0.210 / 0.330
G28     343.6          61.5                3.7 +/-    0.66       4.1 +/-    0.66  0.040 / 0.050
G30     117.6          72.9                5.7 +/-    0.54       5.9 +/-    0.54  0.040 / 0.050