PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-16:12:30
G02     201.9          22.7               11.6 +/-    1.01      23.8 +/-    1.01  0.230 / 0.450
G06     168.5          59.1               13.4 +/-    0.64      15.3 +/-    0.64  0.130 / 0.480
G13     225.6          10.2               12.0 +/-    3.38      33.4 +/-    3.38  0.080 / 0.280
G17     30.3           54.0               10.2 +/-    1.26      12.3 +/-    1.26  0.080 / 0.270
G19     345.0          69.4               11.4 +/-    0.99      12.1 +/-    0.99  0.060 / 0.100
G24     308.1          31.5                8.9 +/-    1.17      15.1 +/-    1.17  0.060 / 0.100
G28     93.6           36.7               10.5 +/-    0.91      16.2 +/-    0.91  0.050 / 0.040
G30     158.1          12.0               10.5 +/-    3.83      27.9 +/-    3.83  0.030 / 0.050