PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-09:27:50
G08     266.9          18.3                4.5 +/-    1.63      10.4 +/-    1.63  0.040 / 0.040
G10     62.8           57.3                4.9 +/-    0.65       5.8 +/-    0.65  0.030 / 0.040
G11     311.0          17.9                0.3 +/-   11.56       0.7 +/-   11.56  0.210 / 0.400
G14     267.7          67.2                4.0 +/-    0.92       4.3 +/-    0.92  0.130 / 0.360
G18     311.7          33.9                2.1 +/-    0.70       3.3 +/-    0.70  0.110 / 0.260
G20     95.8           36.3                4.8 +/-    0.67       7.5 +/-    0.67  0.110 / 0.230
G21     154.6          13.8                4.5 +/-    4.13      11.4 +/-    4.13  0.040 / 0.060
G27     233.1          16.4                5.3 +/-    2.52      12.8 +/-    2.52  0.040 / 0.050
G31     178.7          29.9                5.7 +/-    1.86      10.0 +/-    1.86  0.080 / 0.200
G32     319.7          74.4                4.7 +/-    0.59       4.8 +/-    0.59  0.090 / 0.210