PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-16:58:00
G01     38.6           12.6                6.5 +/-    4.02      17.1 +/-    4.02  0.040 / 0.060
G02     199.7          10.8                0.6 +/-    9.56       1.6 +/-    9.56  0.040 / 0.060
G06     173.5          43.1               11.6 +/-    1.08      16.1 +/-    1.08  0.120 / 0.000
G13     233.1          19.8               11.2 +/-    2.20      24.7 +/-    2.20  0.140 / 0.260
G15     266.8          10.7                9.4 +/-    1.33      25.8 +/-    1.33  0.190 / 0.200
G17     4.3            68.8               10.3 +/-    0.42      11.0 +/-    0.42  0.120 / 0.140
G19     292.4          71.5               10.1 +/-    0.53      10.6 +/-    0.53  0.030 / 0.030
G24     314.9          22.2               19.2 +/-    2.54      40.0 +/-    2.54  0.030 / 0.030
G28     71.2           49.2               10.8 +/-    0.99      13.7 +/-    0.99  0.040 / 0.030
G30     154.9          21.6               10.7 +/-    1.91      22.7 +/-    1.91  0.040 / 0.030