PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-02:57:50
G01     98.9           29.2                6.8 +/-    1.23      12.1 +/-    1.23  0.030 / 0.040
G07     117.4          52.0                5.3 +/-    0.56       6.6 +/-    0.56  0.030 / 0.040
G08     41.9           14.6                2.9 +/-    2.51       7.3 +/-    2.51  0.030 / 0.040
G11     80.4           42.6                4.7 +/-    1.14       6.6 +/-    1.14  0.030 / 0.040
G13     303.7          32.1                2.4 +/-    0.86       4.1 +/-    0.86  0.080 / 0.250
G17     209.8          45.6                7.2 +/-    0.54       9.6 +/-    0.54  0.090 / 0.390
G19     211.4          20.8                5.0 +/-    1.40      10.8 +/-    1.40  0.030 / 0.060
G28     335.2          61.8                3.7 +/-    0.44       4.1 +/-    0.44  0.030 / 0.050
G30     80.6           77.5                4.1 +/-    0.52       4.2 +/-    0.52  0.090 / 0.090