PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-10:43:00
G08     307.0          18.7                3.7 +/-    0.95       8.3 +/-    0.95  0.080 / 0.140
G10     345.7          61.7                2.7 +/-    0.77       3.0 +/-    0.77  0.080 / 0.120
G14     222.6          34.6                6.1 +/-    1.85       9.8 +/-    1.85  0.060 / 0.080
G20     85.1           16.8                3.6 +/-    1.72       8.6 +/-    1.72  0.070 / 0.070
G21     140.4          49.3                4.4 +/-    0.65       5.6 +/-    0.65  0.080 / 0.070
G24     66.2           29.1                3.5 +/-    1.50       6.2 +/-    1.50  0.080 / 0.080
G27     264.7          35.7                7.2 +/-    1.28      11.3 +/-    1.28  0.040 / 0.060
G32     231.2          60.6                4.7 +/-    1.21       5.3 +/-    1.21  0.040 / 0.060