PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/15-07:28:00
G01     123.3          14.6                6.8 +/-    1.94      17.1 +/-    1.94  0.030 / 0.030
G07     69.5           67.8                5.1 +/-    0.69       5.5 +/-    0.69  0.030 / 0.040
G08     46.4           33.6                4.0 +/-    0.74       6.6 +/-    0.74  0.030 / 0.040
G09     173.9          26.5                7.8 +/-    1.69      14.8 +/-    1.69  0.030 / 0.030
G11     111.1          38.0                7.4 +/-    0.62      11.1 +/-    0.62  0.170 / 0.320
G13     319.6          15.8                1.4 +/-    2.66       3.5 +/-    2.66  0.150 / 0.290
G17     199.7          21.4                6.6 +/-    0.65      14.1 +/-    0.65  0.110 / 0.390
G18     97.3           18.7                6.5 +/-    1.15      14.7 +/-    1.15  0.110 / 0.410
G28     282.1          54.4                7.9 +/-    0.86       9.4 +/-    0.86  0.100 / 0.250
G30     336.0          63.2                4.2 +/-    0.74       4.6 +/-    0.74  0.100 / 0.250