PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-22:12:40
G01     40.6           15.8                9.6 +/-    2.59      23.5 +/-    2.59  0.190 / 0.360
G06     177.1          36.5               14.4 +/-    2.10      22.2 +/-    2.10  0.350 / 0.370
G13     236.6          22.3               14.5 +/-    2.11      30.1 +/-    2.11  0.240 / 0.250
G15     269.9          12.2               13.0 +/-    3.49      34.5 +/-    3.49  0.160 / 0.220
G17     4.7            69.8               10.7 +/-    0.29      11.4 +/-    0.29  0.040 / 0.030
G19     277.4          69.4               10.8 +/-    0.71      11.4 +/-    0.71  0.030 / 0.030
G24     315.9          20.5                7.1 +/-    3.25      15.4 +/-    3.25  0.090 / 0.200
G28     67.5           49.9               11.3 +/-    1.09      14.3 +/-    1.09  0.120 / 0.180
G30     154.3          26.1               13.2 +/-    0.95      25.1 +/-    0.95  0.120 / 0.090