PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-14:43:00
G01     78.3           32.7                5.2 +/-    1.60       8.6 +/-    1.60  0.040 / 0.050
G07     132.7          33.5                7.7 +/-    1.05      12.6 +/-    1.05  0.040 / 0.050
G11     58.8           35.8                6.8 +/-    1.22      10.6 +/-    1.22  0.070 / 0.090
G13     282.5          38.8               11.4 +/-    1.59      16.9 +/-    1.59  0.080 / 0.100
G15     308.3          13.5                5.8 +/-    2.14      14.9 +/-    2.14  0.040 / 0.090
G17     221.6          59.7                7.7 +/-    1.83       8.8 +/-    1.83  0.040 / 0.090
G18     54.0           20.8                7.1 +/-    3.32      15.4 +/-    3.32  0.070 / 0.060
G19     218.4          36.7                7.4 +/-    1.56      11.4 +/-    1.56  0.050 / 0.080
G28     353.9          61.5                7.6 +/-    0.76       8.5 +/-    0.76  0.110 / 0.130
G30     126.9          66.9                7.9 +/-    0.80       8.5 +/-    0.80  0.140 / 0.130