PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/07-09:57:40
G01     41.3           16.8                4.0 +/-    2.75       9.6 +/-    2.75  0.270 / 0.340
G06     173.9          36.9                7.2 +/-    1.67      11.0 +/-    1.67  0.410 / 0.310
G13     238.4          24.3                6.8 +/-    1.28      13.5 +/-    1.28  0.120 / 0.360
G15     272.7          13.0                3.5 +/-    1.30       9.2 +/-    1.30  0.120 / 0.260
G17     352.0          73.3                5.0 +/-    0.80       5.2 +/-    0.80  0.090 / 0.100
G19     272.7          69.7                5.3 +/-    0.84       5.6 +/-    0.84  0.060 / 0.080
G24     317.5          15.7                2.8 +/-    1.63       6.9 +/-    1.63  0.040 / 0.040
G28     59.3           53.5                5.0 +/-    0.80       6.0 +/-    0.80  0.040 / 0.040
G30     154.6          32.3                6.6 +/-    1.23      11.0 +/-    1.23  0.060 / 0.110