PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-20:13:10
G01     38.9           13.0               10.2 +/-    3.95      26.7 +/-    3.95  0.040 / 0.060
G02     199.3          11.6                7.8 +/-   22.78      21.1 +/-   22.78  0.040 / 0.070
G06     175.1          41.5               17.2 +/-    0.76      24.4 +/-    0.76  0.110 / 0.140
G13     233.5          19.9               17.7 +/-    1.78      39.1 +/-    1.78  0.110 / 0.170
G15     266.6          10.9               13.7 +/-    1.19      37.5 +/-    1.19  0.170 / 0.300
G17     8.6            67.6               14.5 +/-    0.94      15.6 +/-    0.94  0.170 / 0.460
G19     290.0          71.0               14.9 +/-    0.41      15.6 +/-    0.41  0.140 / 0.360
G24     314.7          22.8               12.1 +/-    1.95      24.8 +/-    1.95  0.120 / 0.430
G28     71.8           48.6               14.2 +/-    0.66      18.3 +/-    0.66  0.040 / 0.030
G30     154.8          21.6               16.6 +/-    1.41      35.2 +/-    1.41  0.030 / 0.030