PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-09:28:00
G01     117.7          17.5                4.1 +/-    0.79       9.6 +/-    0.79  0.030 / 0.040
G07     83.9           64.8                5.0 +/-    0.65       5.5 +/-    0.65  0.040 / 0.040
G08     46.1           34.7                4.1 +/-    0.89       6.6 +/-    0.89  0.190 / 0.190
G09     176.5          26.1                4.9 +/-    1.24       9.4 +/-    1.24  0.300 / 0.190
G11     108.3          41.1                5.1 +/-    0.80       7.4 +/-    0.80  0.090 / 0.260
G13     317.2          20.5                2.3 +/-    2.45       5.0 +/-    2.45  0.100 / 0.250
G17     201.7          21.6                4.0 +/-    2.45       8.5 +/-    2.45  0.030 / 0.030
G18     93.6           20.8                4.5 +/-    1.30       9.8 +/-    1.30  0.040 / 0.030
G28     282.7          52.5                3.4 +/-    2.00       4.2 +/-    2.00  0.120 / 0.140
G30     343.6          67.9                4.0 +/-    0.69       4.2 +/-    0.69  0.120 / 0.160